/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineEditor/Public/MoviePipelineQueueSubsystem.h
Returns true if the current queue has been modified since it was loaded, else returns false. Note that the empty queue that is in use upon the initial load of MRQ is not considered dirty.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="Movie Render Pipeline") bool IsQueueDirty() const